<p>Florida coach Billy Donovan led USA Basketball's under-19 team to a gold medal win Sunday at the FIBA World Championships in Prague, Czech Republic, beating Serbia 82-68.</p><p>Louisville's Montrezl Harrell led the U.S. team with 17 points and four blocks. Nigel Williams-Goss, who will play at Washington, added 15 points and Duke guard Rasheed Sulaimon had 12.</p><p>UF sophomore Michael Frazier II had six rebounds, but no points in 15 minutes of play.</p><p>Team USA went 9-0 in the tournament that began June 27, winning the tournament for only the second time since 1995.</p>